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Pixel Depth?
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DVD Profiler Unlimited RegistrantStar Contributorbentyman
Registered: April 13, 2007
Norway Posts: 651
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Can anyone explain to me what Pixel Depth means? I have seen that signalinfo on my receiver when looking at Blu-ray, and the depths varies from 8 -12bits as I recall. But what does it mean?
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DVD Profiler Desktop and Mobile RegistrantStar ContributorDJ Doena
Registered: May 1, 2002
Registered: March 14, 2007
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Germany Posts: 6,744
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I only know it in the context of computer images.

There the pixel depth means how many different colours a pixel can take. For example: A jpg photogrpah can display 16.78 million colours which equals 24bit colour depth. You have 256 different shades of red times 256 different shades of green times 256 different shaeds of blue = 16.78 million.

8bit colour depth would represent only 256 different colours and is about what DOS could display 20 years ago. So for Blu-ray that would be a bit low.
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DVD Profiler Unlimited RegistrantStar ContributorTomGaines
Registered Sept. 24, 2001
Registered: March 13, 2007
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Germany Posts: 2,005
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For Blu-ray it means the bits per shade. I.e. 8bit color for Blu-ray means 8 bit for green, 8 bit for blue and 8 bit for red. Therefore 24bit in total.


DVD Profiler Unlimited RegistrantStar Contributordee1959jay
Registered: March 19, 2007
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The blu-ray specs are limited to 24 bit, as Tom said. However some equipment can "upscale" that to 30 and/or 36 bit. Of course your screen needs to be able to display these higher bit rates for that. The visible effect is questionable.

Also known as color depth.
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